# Windows Server 2012 R2 / Windows 8.1 KMS Service Activation

This is an update from another post I did https://wibier.me/windows-server-2012-kms-service-activation/

In that post I describe how to add support for Server 2012 and Windows 8. Now we are at the point where we want to add support for Server 2012 R2 and Windows 8.1! And that is possible.

So when you activate a Server 2012 R2 KMS key you will still get the same error:

Or when you add the KMS key itself:

Error: 0xC004F050 The Software Licensing Service reported that the product key is invalid

To resolve:

Download and install the following update: KB2885698 (Update adds support for Windows 8.1 and Windows Server 2012 R2 clients to Windows Server 2008, Windows 7, Windows Server 2008 R2, Windows 8, and Windows Server 2012 KMS hosts).

#### Installation instructions

If you have a KMS host that is running Windows Vista, Windows Server 2008, Windows 7, Windows Server 2008 R2, Windows 8, or Windows Server 2012, follow these steps to perform an upgrade:

• Install the update (update 2885698).
• Restart the computer when you are prompted to do so.
• To install a new KMS host key for Windows 8.1 activation or for Windows Server 2012 R2 activation, run the following command:
cscript %windir%\system32\slmgr.vbs /ipk <KMS host key>


Note In this command, “<KMS host key>” is a placeholder for the new KMS host key for Windows 8.1 activation or for Windows Server 2012 R2 activation.

Important Every KMS host key is associated with a group of Windows editions. Additionally, a KMS host key that is associated with Windows client operating systems cannot be installed on Windows server operating systems, and vice-versa. This is true for all Windows operating systems except for Windows Server 2003. If you install a KMS host key on a Windows operating system that is not associated with that host key, you receive the following error message:

0xc004f015: The Software Licensing Service reported that the license is not installed.
SL_E_PRODUCT_SKU_NOT_INSTALLED

For example, you may receive this error message in the following situations:

• You try to install a Windows 7 KMS host key (CSVLK) on a Windows Server 2008 R2 KMS host.
• You try to install a Windows 8 KMS host key (CSVLK) on a Windows Server 2008 R2 KMS host or a Windows Server 2012 KMS host.
• You try to install a Windows 8.1 KMS host key (CSVLK) on a Windows Server 2008 R2 KMS host or a Windows Server 2012 KMS host or a Windows Server 2012R2 KMS host.
• To activate the new KMS host key on the host computer, run the following command:
cscript %windir%\system32\slmgr.vbs /ato
• On an existing Windows Vista or Windows Server 2008 KMS host, restart the service by running the following command:
net stop slsvc && net start slsvc

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